to immediate family members. borisjohnson says the uk will not turn its back on ukraine, but labour says the visa rules are unclear and confusing. the bbc understands the details of visa requirements for the relatives of people with settled status in the uk are yet to be finalised and implemented, as our home editor, mark easton, reports. "we want to be as generous as we can to ukrainian refugees," the prime minister has said, but at gare du nord in paris, uk border force officials are preventing people escaping the war from boarding the eurostar to london. this document was handed to one ukrainian pensioner trying to come to britain — "no entry clearance," it states. 69—year—old widow valentiyna escaped the fighting and made it to france, which, like most of europe, does not require visas on entry. having been turned away from britain

once, she's now applying for a temporary visitor's visa, hoping tojoin her daughter, nataliya, in the uk. this move of my mother to the uk, it feels like nobody has a sense of emergency there. it feels that way to me, that its slow, it's relaxed, "just wait a little bit longer," and itjust feels like they're worlds apart. i can't quite level it up in my own mind. yvette cooper, please. this afternoon, valentiyna's case was raised in the commons. will she today be able to return to the gare du nord and come safely to the uk? yes. yes, said the home secretary, but the home office has since told me that as things stand, valentiyna could not come to the uk, although new measures may be announced soon. where family members of british nationals do not meet the usual eligibility criteria, but pass security checks, uk visas and immigration will give them the permission to enter the uk outside the rules for 12 months and is prioritising all applications. the home office announcement

still doesn't allow ukrainian law lecturer dr andrii zharikov to bring his 19—year—old sister to britain. she's fled from kyiv to the romanian border, but because he is here on a work visa without indefinite leave to remain, she cannot join him in portsmouth. i don't think there is any prospect of her coming here, so probably it's me who needs to go to an eu country. it might be very difficult for her to be alone for so long. across britain, there's been an outpouring of support for ukraine. this farmer's barn near leeds is now a hub for donations. but when it comes to helping those trying to escape the conflict, the uk has found itself out of step with eu countries, which have already proposed granting instant asylum to ukrainian refugees. the ukrainian flag flies above the home office, a sign of solidarity with the people of that country. but the department has been heavily criticised for not doing more for those fleeing the war, including by some prominent conservatives. when it comes to refugees from ukraine, britain appears to be playing catch—up.

mark easton, bbc news, westminster. let's go live to westminster, and our deputy political editor, vicki young. i mentioned earlier the prime minister said the uk will not be turning its back on ukraine, to what extent is that promise undermined by the row over visas?— the row over visas? there has been a cross-party — the row over visas? there has been a cross-party approach _ the row over visas? there has been a cross-party approach during - the row over visas? there has been a cross-party approach during a - the row over visas? there has been a cross-party approach during a lot - the row over visas? there has been a cross-party approach during a lot of i cross—party approach during a lot of this crisis, but not on this issue. labour being pretty disparaging saying it was a mixture of incompetence and indifference. there are certainly conservatives who want the government to go further as well. i understand they are looking at the possibility of extending the criteria, so more family members could come here. but no decision has been made and the government will not be going as far as the eu's approach. they say visas are necessary because they are effectively security checks. in

other areas, effectively security checks. in otherareas, ministers effectively security checks. in other areas, ministers are at pains to say they are leading the way, particularly when it comes to diplomacy. the prime minister will go to poland and estonia tomorrow. he said tonight the uk will continue to bring maximum pressure to bear on putin's regime, to make sure he feels the consequences of his actions in ukraine. they feel and sanctions in particular, they want to keep the tempo up on all of this. the foreign secretary talking about another list of oligarchs. notjust them as individuals, theirfamilies, those who support them and those who work for them, including may beat the law firms. but she did warn the sanctions will have an impact on us, but nowhere near as the suffering of the ukrainian people. ificki but nowhere near as the suffering of the ukrainian people.— the ukrainian people. vicki young, thank ou the ukrainian people. vicki young, thank you very _ the ukrainian people. vicki young, thank you very much. _ a growing number of ukrainians living in britain have been preparing to join the war effort in ukraine. groups of men are filling vans with equipment before embarking on the i,200—mile drive through western europe to the front lines. our home affairs correspondent

tom symonds has been meeting some of the volunteers. britain is not at war with russia, but in a corner of a london industrial estate, these guys are planning for it. they showed us the military supplies they've managed to buy up in recent days — old british army kit, not from the government, but supplied and sometimes donated by military surplus dealers. a mine detector, medical packs — including tourniquets for stopping bleeding from serious wounds. food — "british rations are better than ours," they say. these vans will leave soon. three of these men will follow. they've all got previous experience, drafted for the ukrainian military. but in peace time, viktor is a fruit picker. i translation: it's as if a stranger. came into your house and they would want to hurt your family, your children, your wife. i think any man would behave the same way as me and the other

guys here, who are all now going back to ukraine. old british uniforms ready to be shipped out. this dealer is practically giving them away, he says. they're similar to the ukraine army's and nothing like the russian's, but... i'm taking all the insignia off, because what we don't want is any propaganda from the russians saying there's british troops in, obviously, ukraine when there's not. and don't be fooled — the ukrainians are not getting modern british army kit. these may look like ballistic bulletproof helmets, but they're only useful for falling debris and shrapnel. i've had brothers, fathers, old men coming to me, i mean, especially on saturday, i must have had about a0 come through, going out, straight to war. they were coming to me, getting kitted up and going straight there. and at this ukrainian cultural centre in london, there has been a steady flow

of new recruits. he said, "of course we do not want to die, but if it's needed, then that's god's will." and we met matthew, a british dental equipment supplier. i want to see an end to the war, but i'm willing to go over to ukraine andjoin and help fight. have you any military experience? some, but very little. what have you done? i've fired guns, i was a member of the cadets, just, yeah, i want to do what i can to help. the british government's view — fighting is best left to those with the training. tom symonds, bbc news. tonight's other major story — a landmark report by the united nations has warned that many of the impacts of global warming are now irreversible. the intergovernmental panel on climate change says there's still a brief window ot time to avoid the worst outcomes, but that over 40% of the world's population is now highly

vulnerable to climate change. the secretary—general of the united nations said the report was "another death knell for the world as we know it". our climate editor, justin rowlatt, has the story. the harvest has failed in eastern ethiopia, as parts of east africa experience what the world food programme says is the worst drought in a0 years. 13 million people are at risk of starvation. today's un report warns that climate change is going to make the world even more prone to disasters like this. and of course it is the most vulnerable who suffer most. this report reveals our people and the planet are getting clobbered by climate change. nearly half of humanity is living in the danger zone now. many ecosystems are at the point of no return now. unchecked carbon pollution is forcing the world's most vulnerable on a frog march to destruction now. our world is changing

before our eyes. half of all the species assessed in the report are already moving in response to climate change, the report says. you see that here in the uk — flowers bloom earlier, for example. and of course, we depend on natural ecosystems for much of our food, water and clean air — so protecting them will be essential for all ourfutures, says the un. human communities need more protection too. landslides caused by flash floods killed nearly 200 people in brazil last month. the un warns the cascading impact of extreme weather events is already becoming increasingly difficult to manage. evidence, it says, of the urgent need to adapt to the hotter and more turbulent climate that is coming. but, say the scientists, it is not too late yet. there is hope, if we limit global warming to 1.5 celsius, the report has many,

many options that would reduce the need for adaptation and losses and damages to natural systems. a man rushes to save his dog from the water as torrential rain causes record flooding in north—east australia today. eight people have died, tens of thousands have been ordered to flee their homes in yet another example of the kind of extreme weather the un says will become increasingly common. and the window for effective action to reduce the risk is closing, it warns. but with war raging in europe, the international cooperation the un says will be essential to tackling this mammoth challenge could prove tragically elusive. justin rowlatt, bbc news. time now to return to events in ukraine and wejoin clive.

vladimir putin put russia's nuclear weapons forces on high alert yesterday, prompting fears about what could happen next in the conflict between russia and ukraine. so how serious is president putin's nuclear threat? here's our security correspondent gordon corera. an ominous order yesterday from vladimir putin, telling military chiefs to move to deterrent weapons, including nuclear bombs, to a special mode of combat duty. the look on their faces gives some sense of their reaction. butjust how serious are the risks? just before its invasion, russia carried out a very public exercise involving nuclear weapons. this was seen as a warning to the west not to get directly involved in ukraine. and putin's latest statement is also being interpreted as a warning rather than a real sign of intent. he is clearly wanting to get

people's attention distracted from what is going on on the ground, and he's had that... you know, to some extent, he's successfully had it. but at the moment, this is a battle of rhetoric that president putin is deploying, and we just have to make sure that we manage it properly. western intelligence has long kept a close eye on russian nuclear sites for any warning signs. and today, us officials say they've not seen any changes in behaviour. the us has also given no indication of changing its own nuclear alert status. we have not changed our own posture. what we are trying to do is reduce the tension, take the tenor of the rhetoric down. this is not to say there are no risks. look at how isolated putin is even from the top officials he gave the order to. one fear is that he may not act rationally, but he also might be encouraging that idea. this is sort of a known tactic . of politicians to try to convince

potential adversaries - that they might not be entirely rational and that that will, - in turn, make the threat of nuclear use even more credible. nuclear weapons, like those on britain's submarines, are supposed to deter conflict. all sides know that their use would be catastrophic for everyone, and the hope is that this logic will still hold. gordon corera, bbc news. lyse is with me for a final thought. both sides of held talks on the border with belarus. nothing came of it now, but they will meet again. that is a sign of hope?— that is a sign of hope? yes, but the are that is a sign of hope? yes, but they are saying _ that is a sign of hope? yes, but they are saying later _ that is a sign of hope? yes, but they are saying later in - that is a sign of hope? yes, but they are saying later in the - that is a sign of hope? yes, but| they are saying later in the week and every day longer is a day too much. we have seen the escalation of this war today, even in the heart of

the city. ukrainian lives shattered and we must also bear in mind this is a war where our assumptions about it have been turned on its head. the ukrainian army is outgunned and out manned by the mighty russian army, but it is fighting back. it is fighting back by blowing up bridges, surface to air missiles we have seen lighting up the sky. and ukrainian civilians with guns with patriotically resolve are fighting back and day six has now begun. yes. back and day six has now begun. yes, da six of back and day six has now begun. yes, day six of this — back and day six has now begun. yes, day six of this conflict. _ back and day six has now begun. yes, day six of this conflict. lyse, thank you. and finally, the conflict in ukraine is sadly seeing a rising number of civilian deaths. we will leave you with one tragic story. five members of the fedko family died on the first day of the war. oleg fedko and his wife anna were killed

along with their daughter—in—law while trying to escape the russian advance in the south of the country, when they came under fire in their cars. the grand daughter sophia and their grandson, ivan, who was only a few weeks old. that's it. there's more on the situation on ukraine over on newsnight on bbc two, but now it's time for the news where you are. have a very good night. hello and welcome to our look ahead to what the the papers will be bringing us tomorrow. with me are melinda haring,

who's deputy director of the atlantic council's eurasia centre, and natalie fahy,